If you have lost your Windows 98, ME, 2000, XP Home or Professional or Your Office XP or 2003 or norton Product Key this software can find it instantly. No need to buy Windows again or buy a new product key, simply get it back in a click. You can also change your product keys for Windows (not SP2) and Some office versions. You can also save all your product keys to a text file for printing. You can use it on a many computers as you own, use or repair so a very handy for a computer repair person.